Welcome to my parlor. Everyone here is perfectly honest. Especially me.
MathPlay · Case files 01–15
Read the ledgers, run the experiment, and file your theory. Sometimes it’s a cheat. Sometimes it’s just luck.
Every host swears their game is fair. Some of them are even right.
Chapter 1 · Host: Fib
Four gamblers, four ledgers, one suspicious streak. Your evidence budget is small, so spend it where it can prove something.
On trial: variation, sample size, and why one streak proves little.
Chapter 2 · Host: Skip
One bead is a coin flip. A thousand make a shape. Work out whether someone has tampered with Skip’s pegs.
On trial: single paths versus the overall shape and spread.
Chapter 3 · Host: Vale
Vale opens a door and offers a switch. Generous, random, or a trap? Test the host across many doors before you decide.
On trial: conditional probability and the host’s rules.
Every case follows the same 5 steps, with no equations on screen. After the reveal, a card shows the math behind what you did.
MathPlay is in closed testing on Google Play. All 15 cases are free, and your progress carries over.
Not on the tester list yet? Email safdhi125@gmail.com with your Play Store address.
Android 7.0+ · English only · No iPhone version yet
The Android app doesn’t request internet access, so it can’t send anything anywhere. You can play on a plane.
The game has no account, analytics, or tracking. Your progress stays on your phone until you erase it.
Nothing interrupts a case, and nothing is locked behind a purchase.
A sound theory earns credit even when the dice go against you. A lucky guess doesn’t.
